Laser detection device for measuring diameter of wheel of railway vehicle

Abstract

The invention discloses a laser detection device for measuring the diameter of a wheel of a railway vehicle. The laser detection device for measuring the diameter of the wheel of the railway vehicle comprises a laser transmitter, a CCD camera, a laser distance measuring sensor and a central processing control system. A detection window is cut in a main rail on which a locomotive travels; the laser transmitter and the CCD camera are installed below the detection window of the main rail, the laser distance measuring sensor is installed at the position, exactly facing the rim of the wheel, of the inner side of the main rail, the laser transmitter irradiates the tread of the wheel to form a light section shape curve representing the overall dimensions, the CCD camera obtains the light section shape curve, and transmits data to the central processing control system, the laser distance measuring sensor obtains data of the distance of the rim of the wheel through measurement, and sends the data to the central processing control system, and the central processing control system carries out calculation to obtain the diameter of the wheel. According to the laser detection device for measuring the diameter of the wheel of the railway vehicle, the laser distance measuring sensor is used for carrying out auxiliary measurement, the position of the rolling circle of the tread of the wheel is accurately located, the accurate measurement of the diameter of the wheel is achieved, the structure is simple, applicability is good, and traveling safety of trains is ensured.

Description

technical field [0001] The invention relates to a detection device for a locomotive wheel, in particular to a laser detection device for measuring the diameter of a locomotive wheel. Background technique [0002] The wheel is the key component of the locomotive running system. The wheel is the part of the locomotive that is in contact with the rail. The function of the wheel is to ensure the running and steering of the locomotive on the rail. The key dimensions of the wheel shape are directly related to the driving safety. The rapid development of railway speed and the high-density operation of rolling stock have accelerated the wear of wheels. Therefore, in order to avoid the situation that the wheels with oversized dimensions are still in use and ensure the safety of the train, it is necessary to dynamically detect the dimensions of the wheels. [0003] At present, laser image measurement technology has been widely used in precision measurement. Laser measurement is a non...

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Problems solved by technology

[0005] The technical problem to be solved and the technical task proposed by the present invention are to improve the existing technology and provide a laser detection device for measuring the diameter of the rolling stock wheel, so as to solve the problem that the rails will be deformed and the wheels will be left and right when the train is moving in the current technology. Oscillation, the intersection of the wheel tread and the rail is difficult to locate precisely, resulting in poor measurement accuracy and accuracy of the wheel diameter

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